html,body,ol,ul,h1,h2,h3,h4,h5,h6,p,th,td,dl,dd,form,fieldset,legend,input,textarea,select,header,section,figure,figcaption,nav,footer{
    margin:0;
    padding:0
}
/* *{
    margin: 0;
    padding: 0;
} */
body,html{
    background-color: #f5f5f5;
}


body{
    font: 14px "微软雅黑",Arial;
    
}
h1,h2,h3,h4,h5,h6,b,strong{
    font-weight: normal;
    font-size: 100%;
}
i,em{
    font-style: normal;
}
u{
    text-decoration: none;
}
a{
    text-decoration: none;
    color: #555555;
}
li{
    list-style: none;
}
input{
    outline: none;
}
/* 帮助解决图片被嵌套后的3-6像素bug */
img{
    vertical-align: middle;
}
.clearfix::after{
    display: block;
    clear: both;
    content: '';
    height: 0;
    visibility: hidden;
}